BMW DTC P17D4 – Pressure Control Solenoid ‘B’ Sense Circuit Current Too High
DTC P17D4 meaning on BMW
The DTC P17D4 code on a BMW indicates that the Pressure Control Solenoid ‘B’ Sense Circuit Current is too high. This means that there is an electrical issue related to the pressure control solenoid ‘B’ in the transmission system.
BMW DTC P17D4 symptoms
Symptoms of the DTC P17D4 code on a BMW may include harsh shifting, transmission slipping, transmission overheating, and in some cases, the transmission may go into limp mode. The Check Engine Light may also be illuminated on the dashboard.
BMW DTC P17D4 causes
The common causes of the DTC P17D4 code on a BMW include a faulty pressure control solenoid ‘B’, damaged wiring or connectors in the solenoid circuit, low transmission fluid level, or a malfunctioning transmission control module.
BMW DTC P17D4 seriousness
Ignoring the DTC P17D4 code on a BMW can lead to further damage to the transmission system, potentially resulting in complete transmission failure. It is important to address this issue promptly to prevent costly repairs.
How to diagnose DTC P17D4 on BMW
To diagnose the DTC P17D4 code on a BMW, a mechanic would typically start by using a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer. They would then inspect the pressure control solenoid ‘B’ and its circuit for any visible damage or corrosion. Testing the solenoid’s resistance and checking the transmission fluid level and condition are also common diagnostic steps.
How to fix DTC P17D4 on BMW
Fixing the DTC P17D4 code on a BMW may involve replacing the pressure control solenoid ‘B’ if it is found to be faulty. Repairing or replacing any damaged wiring or connectors in the solenoid circuit is also necessary. Ensuring the transmission fluid is at the correct level and in good condition is important. In some cases, reprogramming or replacing the transmission control module may be required.
How to erase DTC P17D4 on BMW
After the necessary repairs have been made to address the DTC P17D4 code on a BMW, the code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s computer memory and turn off the Check Engine Light. It is important to verify that the issue has been resolved before clearing the code.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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